36620116ENVIRONMENTALSCIENCEANDMANAGEMENTVol.36No.6June2011:2010-12-14:(1986-),,,,:。:1674-6139(2011)06-0067-04孙楠,董玲(,243002) :以宜兴市华骐污水处理厂的二级出水作为研究对象,研究碳氮比、水力负荷和气水比对复合曝气生物滤池运行的影响。研究发现,以葡萄糖作碳源,当碳氮比6:1时,滤池对总氮的去除率能达到80%以上,出水亚硝酸盐浓度很低。保持碳氮比为6,随着水力负荷的增大,滤池对总氮的去除率会有所下降,但增大到3.5m/h时,去除率仍保持在60%以上;水力负荷对于浊度和COD的去除率影响不是很大。随着气水比的增大,好氧段对于COD的去除率呈上升趋势。:复合曝气生物滤池;水力负荷;碳氮比;气水比:X703.1:AResearchonOperatingParametersofCombinedBiologicalAeratedFilterSunNan,DongLing(SchoolofArchitecturalEngineering,AnhuiUniversityofTechnology,Maanshan243002,China)Abstract:ApilotscaleexperimentwascarriedoutwitheffluentfromsecondarytreatmentofHuaqiWastewaterTreatmentPlantinYixingasresearchobject.TheC/Nratio,hydraulicloadandthegas-waterratiowereinvestigatedtoanalyzetheirim-pactsoncombinedbiologicalaeratedfilter(CBAF).TheresultsshowthattakingglucoseascarbonresourcewithC/Nratioof6:1,thetotalnitrogen(TN)removalrateofthebiofilterscanreachover80%,andtheNO2-concentrationintheeffluentislow.MaintainingthisC/Nratio,theTNremovalratedecreasedwiththeincreasingofhydraulicload,whichwasstillmorethan60%whenthehydraulicloadwasupto3.5m/h;theturbidityandCODremovalratewerenotsignificantlyinfluencedbyhydraulicload.TheCODremovalrateintheaerobiczoneincreasedwiththeriseofgas-waterratio.Keywords:combinedbiologicalaeratedfilter(CBAF);hydraulicload;C/Nratio;gas-waterratio ,,,。,,。,,,,,,。。1 1.1 6mm,5.05m、0.8m×1.0m。1.1m,BAF,300mm。,,1.25m,3mm~5mm;,1m,1.8mm~3mm。,。,,400mm。,,BA;,COD,。,,,·67·36620116·Vol.36No.6June2011。(1)1 1.2 CODcr、TN、NO-2-N、pH,[1],1。1 12345CODNO-2-NTNpH2 ,,Q=1.2m3/h,q=1.5m/h,3:1~4:1。,。,,,,。15d,。2.1 NO-2+3H()~1/2N2+H2O+OH-NO-3+5H()~1/2N2+H2O+OH-,。,,。,,。,。Q=1.2m3/h,q=1.5m/h,28℃~29℃,,4:1、5:1、6:1,,2、3。2 3 2、3,,。,4:15:1,44.2%69.9%,,1mg/L,,。6:1,81%,1mg/L,。,,q=1.5m/h,6:1,,80%,。BOD,。,、[2],,,,,·68·36620116·Vol.36No.6June2011。2.2 6,26℃~29℃,3:1,2.8m3/h、2.4m3/h、2.0m3/h、1.6m3/h、1.2m3/h,1.5m/h、2m/h、2.5m/h、3m/h3.5m/h,。2.2.1 水力负荷对总氮去除率的影响4 5 4、5,,,。,,,,,,,,NO-2。,。,,,,,。NO-20.5mg/L,。,,,。1.5m/h3.5m/h,88%、79%、70%、68.2%63.6%,,,3.5m3/(m2·h),。2.2.2 水力负荷对COD去除率的影响6 COD6,COD,,30%。,,,。,CODCOD,,;,。COD,0.8kgCOD/m3·d,,,COD,。,COD。2.2.3 水力负荷对浊度去除率的影响7 ·69·36620116·Vol.36No.6June20117,,。,,,,[3]。,,90%;,,,,,80%。,,,。2.3 COD26℃~29℃,Q=1.2m3/h,3:1,4:15:1,COD。8 COD8,,COD。,,。[4],。,,,。COD,,COD,60%。3 (1),,,,;COD,COD;,80%。(2),6:1,80%,1mg/L,6:1,,。(3),COD,,CODCOD。:[1]国家环境保护总局,水和废水监测分析方法编委会编.水和废水监测分析方法(第四版)[M].北京:中国环境科学出版社,2002.[2]徐亚同.不同碳源对生物反硝化的影响[J].环境科学,1994(10).[3]刘建广,张春阳.生物曝气滤池在卷烟厂污水处理中的应用研究[J].环境工程,2003,21(3).[4]陈坚.环境生物技术[M].北京:中国轻工业出版社,1999.·70·